Sub-Areolar Vs Circumareolar Vs SemiAreolar Mastopexy

The terms u you mention are not all ones in common use, so I suspect they all mean the same thing, which is a periareolar mastopexy, also called a Benelli or donut mastopexy. 

Hi there-
I think too many people view breast lift techniques as totally interchangeable and that they should choose the technique based on the type of scar you want... The reality is that each technique tends to produce a characteristic change in the breast shape, that depending on your current breast shape, may or may not be a favorable change for you.
These are very subtle considerations... It is very important that you find a Board Certified Plastic Surgeon with a lot of experience in breast surgery, and with knowledge of each technique. After a consultation and examination, this professional will be able to guide you in your understanding of which technique or techniques may be best for you.